*{
    margin: 0;
    padding: 0;
}
.select-info{
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 40px;
    background-color: aquamarine;
}
.select-info>div{
   margin: 0 20px;
}
.nav-manage{
    width: 100%;
}
.nav-manage>tbody tr:nth-child(even){
    background-color: skyblue;
}
.nav-manage>tbody tr:nth-child(odd){
    background-color: springgreen;
}
.nav-manage>tbody>tr>td{
    text-align: center;
}